<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title>计算器</title>
	</head>
	<body>
		<input type="text" name="suz" id="id1" value="" />
		<select name="fuhao" id="">
					<option value="">请选择运算符号</option>
		             <option value="">+</option>
		             <option value="">-</option>
					 <option value="">*</option>
					 <option value="">/</option>
		</select>
		<input type="text" name="suz" id="id2" value="" />=
		<input type="text" name="suz" id="id3" value="" />
	</body>
</html>
